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-rw-r--r--sbin/geom/class/journal/geom_journal.c340
1 files changed, 340 insertions, 0 deletions
diff --git a/sbin/geom/class/journal/geom_journal.c b/sbin/geom/class/journal/geom_journal.c
new file mode 100644
index 0000000..e73e7ec
--- /dev/null
+++ b/sbin/geom/class/journal/geom_journal.c
@@ -0,0 +1,340 @@
+/*-
+ * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <errno.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <assert.h>
+#include <libgeom.h>
+#include <geom/journal/g_journal.h>
+#include <core/geom.h>
+#include <misc/subr.h>
+
+#include "geom_journal.h"
+
+
+uint32_t lib_version = G_LIB_VERSION;
+uint32_t version = G_JOURNAL_VERSION;
+
+static intmax_t default_jsize = -1;
+
+static void journal_main(struct gctl_req *req, unsigned flags);
+static void journal_clear(struct gctl_req *req);
+static void journal_dump(struct gctl_req *req);
+static void journal_label(struct gctl_req *req);
+
+struct g_command class_commands[] = {
+ { "clear", G_FLAG_VERBOSE, journal_main, G_NULL_OPTS,
+ "[-v] prov ..."
+ },
+ { "dump", 0, journal_main, G_NULL_OPTS,
+ "prov ..."
+ },
+ { "label", G_FLAG_VERBOSE, journal_main,
+ {
+ { 'c', "checksum", NULL, G_TYPE_BOOL },
+ { 'f', "force", NULL, G_TYPE_BOOL },
+ { 'h', "hardcode", NULL, G_TYPE_BOOL },
+ { 's', "jsize", &default_jsize, G_TYPE_NUMBER },
+ G_OPT_SENTINEL
+ },
+ "[-cfhv] [-s jsize] dataprov [jprov]"
+ },
+ { "stop", G_FLAG_VERBOSE, NULL,
+ {
+ { 'f', "force", NULL, G_TYPE_BOOL },
+ G_OPT_SENTINEL
+ },
+ "[-fv] name ..."
+ },
+ { "sync", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
+ "[-v]"
+ },
+ G_CMD_SENTINEL
+};
+
+static int verbose = 0;
+
+static void
+journal_main(struct gctl_req *req, unsigned flags)
+{
+ const char *name;
+
+ if ((flags & G_FLAG_VERBOSE) != 0)
+ verbose = 1;
+
+ name = gctl_get_ascii(req, "verb");
+ if (name == NULL) {
+ gctl_error(req, "No '%s' argument.", "verb");
+ return;
+ }
+ if (strcmp(name, "label") == 0)
+ journal_label(req);
+ else if (strcmp(name, "clear") == 0)
+ journal_clear(req);
+ else if (strcmp(name, "dump") == 0)
+ journal_dump(req);
+ else
+ gctl_error(req, "Unknown command: %s.", name);
+}
+
+static int
+g_journal_fs_exists(const char *prov)
+{
+
+ if (g_journal_ufs_exists(prov))
+ return (1);
+#if 0
+ if (g_journal_otherfs_exists(prov))
+ return (1);
+#endif
+ return (0);
+}
+
+static int
+g_journal_fs_using_last_sector(const char *prov)
+{
+
+ if (g_journal_ufs_using_last_sector(prov))
+ return (1);
+#if 0
+ if (g_journal_otherfs_using_last_sector(prov))
+ return (1);
+#endif
+ return (0);
+}
+
+static void
+journal_label(struct gctl_req *req)
+{
+ struct g_journal_metadata md;
+ const char *data, *journal, *str;
+ u_char sector[512];
+ intmax_t jsize, msize, ssize;
+ int error, force, i, nargs, checksum, hardcode;
+
+ nargs = gctl_get_int(req, "nargs");
+
+ strlcpy(md.md_magic, G_JOURNAL_MAGIC, sizeof(md.md_magic));
+ md.md_version = G_JOURNAL_VERSION;
+ md.md_id = arc4random();
+ md.md_joffset = 0;
+ md.md_jid = 0;
+ md.md_flags = GJ_FLAG_CLEAN;
+ checksum = gctl_get_int(req, "checksum");
+ if (checksum)
+ md.md_flags |= GJ_FLAG_CHECKSUM;
+ force = gctl_get_int(req, "force");
+ hardcode = gctl_get_int(req, "hardcode");
+
+ if (nargs != 1 && nargs != 2) {
+ gctl_error(req, "Invalid number of arguments.");
+ return;
+ }
+
+ /* Verify the given providers. */
+ for (i = 0; i < nargs; i++) {
+ str = gctl_get_ascii(req, "arg%d", i);
+ if (g_get_mediasize(str) == 0) {
+ gctl_error(req, "Invalid provider %s.", str);
+ return;
+ }
+ }
+
+ data = gctl_get_ascii(req, "arg0");
+ jsize = gctl_get_intmax(req, "jsize");
+ journal = NULL;
+ switch (nargs) {
+ case 1:
+ if (!force && g_journal_fs_exists(data)) {
+ gctl_error(req, "File system exists on %s and this "
+ "operation is going to destroy it. Use -f if you "
+ "really want to do it.", data);
+ return;
+ }
+ journal = data;
+ if (jsize == -1) {
+ /*
+ * No journal size specified. 1GB should be safe
+ * default.
+ */
+ jsize = 1073741824ULL;
+ }
+ msize = g_get_mediasize(data);
+ ssize = g_get_sectorsize(data);
+ if (jsize + ssize >= msize) {
+ gctl_error(req, "Provider too small for journalling. "
+ "You can try smaller jsize (default is %jd).",
+ jsize);
+ return;
+ }
+ md.md_jstart = msize - ssize - jsize;
+ md.md_jend = msize - ssize;
+ break;
+ case 2:
+ if (!force && g_journal_fs_using_last_sector(data)) {
+ gctl_error(req, "File system on %s is using the last "
+ "sector and this operation is going to overwrite "
+ "it. Use -f if you really want to do it.", data);
+ return;
+ }
+ journal = gctl_get_ascii(req, "arg1");
+ if (jsize != -1) {
+ gctl_error(req, "jsize argument is valid only for "
+ "all-in-one configuration.");
+ return;
+ }
+ msize = g_get_mediasize(journal);
+ ssize = g_get_sectorsize(journal);
+ md.md_jstart = 0;
+ md.md_jend = msize - ssize;
+ break;
+ }
+
+ if (g_get_sectorsize(data) != g_get_sectorsize(journal)) {
+ gctl_error(req, "Not equal sector sizes.");
+ return;
+ }
+
+ /*
+ * Clear last sector first, to spoil all components if device exists.
+ */
+ for (i = 0; i < nargs; i++) {
+ str = gctl_get_ascii(req, "arg%d", i);
+ error = g_metadata_clear(str, NULL);
+ if (error != 0) {
+ gctl_error(req, "Cannot clear metadata on %s: %s.", str,
+ strerror(error));
+ return;
+ }
+ }
+
+ /*
+ * Ok, store metadata.
+ */
+ for (i = 0; i < nargs; i++) {
+ switch (i) {
+ case 0:
+ str = data;
+ md.md_type = GJ_TYPE_DATA;
+ if (nargs == 1)
+ md.md_type |= GJ_TYPE_JOURNAL;
+ break;
+ case 1:
+ str = journal;
+ md.md_type = GJ_TYPE_JOURNAL;
+ break;
+ }
+ md.md_provsize = g_get_mediasize(str);
+ assert(md.md_provsize != 0);
+ if (!hardcode)
+ bzero(md.md_provider, sizeof(md.md_provider));
+ else {
+ if (strncmp(str, _PATH_DEV, strlen(_PATH_DEV)) == 0)
+ str += strlen(_PATH_DEV);
+ strlcpy(md.md_provider, str, sizeof(md.md_provider));
+ }
+ journal_metadata_encode(&md, sector);
+ error = g_metadata_store(str, sector, sizeof(sector));
+ if (error != 0) {
+ fprintf(stderr, "Cannot store metadata on %s: %s.\n",
+ str, strerror(error));
+ gctl_error(req, "Not fully done.");
+ continue;
+ }
+ if (verbose)
+ printf("Metadata value stored on %s.\n", str);
+ }
+}
+
+static void
+journal_clear(struct gctl_req *req)
+{
+ const char *name;
+ int error, i, nargs;
+
+ nargs = gctl_get_int(req, "nargs");
+ if (nargs < 1) {
+ gctl_error(req, "Too few arguments.");
+ return;
+ }
+
+ for (i = 0; i < nargs; i++) {
+ name = gctl_get_ascii(req, "arg%d", i);
+ error = g_metadata_clear(name, G_JOURNAL_MAGIC);
+ if (error != 0) {
+ fprintf(stderr, "Cannot clear metadata on %s: %s.\n",
+ name, strerror(error));
+ gctl_error(req, "Not fully done.");
+ continue;
+ }
+ if (verbose)
+ printf("Metadata cleared on %s.\n", name);
+ }
+}
+
+static void
+journal_dump(struct gctl_req *req)
+{
+ struct g_journal_metadata md, tmpmd;
+ const char *name;
+ int error, i, nargs;
+
+ nargs = gctl_get_int(req, "nargs");
+ if (nargs < 1) {
+ gctl_error(req, "Too few arguments.");
+ return;
+ }
+
+ for (i = 0; i < nargs; i++) {
+ name = gctl_get_ascii(req, "arg%d", i);
+ error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
+ G_JOURNAL_MAGIC);
+ if (error != 0) {
+ fprintf(stderr, "Cannot read metadata from %s: %s.\n",
+ name, strerror(error));
+ gctl_error(req, "Not fully done.");
+ continue;
+ }
+ if (journal_metadata_decode((u_char *)&tmpmd, &md) != 0) {
+ fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
+ name);
+ gctl_error(req, "Not fully done.");
+ continue;
+ }
+ printf("Metadata on %s:\n", name);
+ journal_metadata_dump(&md);
+ printf("\n");
+ }
+}
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